Millimeter-wavelength network map for use in a beamforming procedure

An apparatus for wireless communication by a user equipment (UE), the apparatus comprising:

• a memory;
• and
• at least one processor coupled to the memory and configured to:
• receive information associated with a beamforming procedure from a base station, the information including at least one of:
• a subframe structure for use during the beamforming procedure,
• first codebook information for use by the base station during the beamforming procedure, the first codebook information indicates a first subset of beam orientations in a base station codebook, and
• second codebook information for use by the UE during the beamforming procedure, the second codebook information indicates a second subset of beam orientations in a UE codebook, wherein distinct groups in the second subset of beam orientations are each associated with a different antenna subarray of the UE;
• determine possible access beams based on the first subset of beam orientations in the base station codebook and the second subset of beam orientations in the UE codebook, wherein the determining possible access beams comprises:
• (i) fixing a beam orientation associated with an antenna subarray of the UE for a duration of a contiguous symbol block in the subframe structure;
• (ii) applying each beam orientation in the first subset of beam orientations to the beam orientation associated with the antenna subarray of the UE during the contiguous symbol block;
• and
• (iii) repeating (i) and (ii) using each beam orientation in the first subset of beam orientations and the second subset of beam orientations until the possible access beams have been determined;
• determine an access beam for use in communication with the base station based on at least one of the subframe structure, the first codebook information, and the second codebook information;
• and
• communicate with the base station using the determined access beam.

A method of wireless communications at a base station, comprising:

• receiving information associated with a beamforming procedure from a network entity, the information including:
• a subframe structure for use during the beamforming procedure,
• first codebook information for use by the base station during the beamforming procedure, the first codebook information indicates a first subset of beam orientations in a base station codebook, and
• second codebook information to be used by a user equipment (UE) during the beamforming procedure, the second codebook information indicates a second subset of beam orientations in a UE codebook, wherein distinct groups in the second subset of beam orientations are each associated with a different antenna subarray of the UE;
• determining possible access beams based on the first subset of beam orientations in the base station codebook and the second subset of beam orientations in the UE codebook, wherein the determining possible access beams comprises:
• (i) applying each beam orientation in the first subset of beam orientations to one beam orientation in the second subset of beam orientations during a contiguous symbol block in the subframe structure;
• and
• (ii) repeating (i) over different contiguous symbol blocks in the subframe structure until the possible access beams are determined;
• determining an access beam for use in communicating with the UE based on at least one of the subframe structure, the first codebook information, and the second codebook information;
• and
• communicating with the UE using the determined access beam.